Perhaps you should try some spelling variations:
danh vai » danh sai, danh va, doanh van
thu sac » thu sach, thu san, thu xac
cam duc » cam xuc, cao duc, pham duc
va danh » va dinh, va dan, va hanh
hieu va » lieu va, hieu qua
hieu ve » hieu van
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
sac ky » cac ky, sai ky
cua tu » cua tuc, cua cu, cua te
cua su » qua su

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sac ky lang xa hoi. ((hieu ve) or (hieu va)) cam duc va danh vai ((cua tu) OR (cua su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sac ky lang xa hoi. ((hieu ve) OR (hieu va)) cam duc va danh vai ((cua tu) OR (cua su)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sac ky lang xa hoi. ((hieu ve) or (hieu va)) cam duc va danh vai ((cua tu) OR (cua su))".
• Adding a wildcard symbol may retrieve word variants: thu sac ky lang xa hoi. ((hieu ve) or (hieu va)) cam duc va danh vai ((cua tu) OR (cua su))*.